EP1324372A3 - Ultra-high pressure mercury lamp - Google Patents

Ultra-high pressure mercury lamp Download PDF

Info

Publication number
EP1324372A3
EP1324372A3 EP02027087A EP02027087A EP1324372A3 EP 1324372 A3 EP1324372 A3 EP 1324372A3 EP 02027087 A EP02027087 A EP 02027087A EP 02027087 A EP02027087 A EP 02027087A EP 1324372 A3 EP1324372 A3 EP 1324372A3
Authority
EP
European Patent Office
Prior art keywords
ultra
light emitting
high pressure
emitting part
pressure mercury
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02027087A
Other languages
German (de)
French (fr)
Other versions
EP1324372A2 (en
EP1324372B1 (en
Inventor
Tetsuji Hirao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ushio Denki KK
Original Assignee
Ushio Denki KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ushio Denki KK filed Critical Ushio Denki KK
Publication of EP1324372A2 publication Critical patent/EP1324372A2/en
Publication of EP1324372A3 publication Critical patent/EP1324372A3/en
Application granted granted Critical
Publication of EP1324372B1 publication Critical patent/EP1324372B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
    • H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Discharge Lamp (AREA)
  • Glass Compositions (AREA)

Abstract

To obtain an ultra-high pressure mercury lamp in which even in the case of lamp operation over a long time devitrification of the light emitting part (11) is suppressed, an ultra-high pressure mercury lamp with a silica glass light emitting part (11) has a pair of opposed electrodes (14,15), a rare gas, a halogen and at least 0.15 mg/mm 3 of mercury, the amount of halogen in the light emitting part (11) being at least 1.0 x 10 -4 µmol/mm 3 and the amount of Mo in the light emitting part (11) being at most 0.5 x 10 -5 µmol/mm 3 . Also, such a lamp can have an amount of halogen in the light emitting part of at least 2.0 x 10 -4 µmol/mm 3 with an amount of Mo of at most 1.0 x 10 -5 µmol/mm 3 .
EP02027087A 2001-12-05 2002-12-03 Ultra-high pressure mercury lamp Expired - Lifetime EP1324372B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001371834A JP3565203B2 (en) 2001-12-05 2001-12-05 Ultra high pressure mercury lamp
JP2001371834 2001-12-05

Publications (3)

Publication Number Publication Date
EP1324372A2 EP1324372A2 (en) 2003-07-02
EP1324372A3 true EP1324372A3 (en) 2006-02-22
EP1324372B1 EP1324372B1 (en) 2007-03-07

Family

ID=19180825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02027087A Expired - Lifetime EP1324372B1 (en) 2001-12-05 2002-12-03 Ultra-high pressure mercury lamp

Country Status (5)

Country Link
US (1) US6815895B2 (en)
EP (1) EP1324372B1 (en)
JP (1) JP3565203B2 (en)
CN (1) CN1282987C (en)
DE (1) DE60218622T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6939362B2 (en) * 2001-11-27 2005-09-06 Advanced Cardiovascular Systems, Inc. Offset proximal cage for embolic filtering devices
DE10044562A1 (en) * 2000-09-08 2002-03-21 Philips Corp Intellectual Pty Low pressure gas discharge lamp with mercury-free gas filling
JP2005019262A (en) * 2003-06-27 2005-01-20 Ushio Inc Short arc type discharge lamp lighting device
JP2005196011A (en) * 2004-01-09 2005-07-21 Ushio Inc Light source unit of projector apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5594302A (en) * 1995-08-22 1997-01-14 Lamptech Ltd. Metal halide lamp including iron and molybdenum
GB2351603A (en) * 1999-06-28 2001-01-03 Koito Mfg Co Ltd Arc tube for discharge lamp including a residual compressive stress layer
CA2387851A1 (en) * 1999-10-18 2001-04-26 Mamoru Takeda Mercury lamp, lamp unit, method for producing mercury lamp and electric lamp
EP1137048A2 (en) * 2000-03-13 2001-09-26 Nec Corporation High pressure discharge lamp and method for sealing a bulb thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL184550C (en) * 1982-12-01 1989-08-16 Philips Nv GAS DISCHARGE LAMP.
DE3813421A1 (en) 1988-04-21 1989-11-02 Philips Patentverwaltung HIGH PRESSURE MERCURY VAPOR DISCHARGE LAMP
JP2980882B2 (en) 1998-04-08 1999-11-22 ウシオ電機株式会社 High pressure mercury lamp
JP2000123786A (en) 1998-10-13 2000-04-28 Matsushita Electronics Industry Corp High-pressure mercury lamp, illumination optical device using this high-pressure mercury lamp and image display device using this illumination optical device
JP2001319618A (en) 2000-05-08 2001-11-16 Ushio Inc Ultrahigh-pressure mercury lamp and its manufacturing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5594302A (en) * 1995-08-22 1997-01-14 Lamptech Ltd. Metal halide lamp including iron and molybdenum
GB2351603A (en) * 1999-06-28 2001-01-03 Koito Mfg Co Ltd Arc tube for discharge lamp including a residual compressive stress layer
CA2387851A1 (en) * 1999-10-18 2001-04-26 Mamoru Takeda Mercury lamp, lamp unit, method for producing mercury lamp and electric lamp
EP1137048A2 (en) * 2000-03-13 2001-09-26 Nec Corporation High pressure discharge lamp and method for sealing a bulb thereof

Also Published As

Publication number Publication date
EP1324372A2 (en) 2003-07-02
JP3565203B2 (en) 2004-09-15
CN1423301A (en) 2003-06-11
CN1282987C (en) 2006-11-01
DE60218622D1 (en) 2007-04-19
DE60218622T2 (en) 2007-11-22
US20030102807A1 (en) 2003-06-05
US6815895B2 (en) 2004-11-09
JP2003173759A (en) 2003-06-20
EP1324372B1 (en) 2007-03-07

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